Home / 21,291.77-29,382.26-11,860.13

Finding the Fourth Proportional to 21,291.77, 29,382.26 and 11,860.13

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Solution

The fourth proportional to 21,291.77, 29,382.26 and 11,860.13 is: 16,366.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.77 : 29,382.26 = 11,860.13 : x
  2. Step 2: Convert to fraction form
    21,291.77/29,382.26 = 11,860.13/x
  3. Step 3: Cross multiply
    21,291.77x = 29,382.26 × 11,860.13
  4. Step 4: Simplify right side
    21,291.77x = 348,477,217.08
  5. Step 5: Solve for x
    x = 348,477,217.08/21,291.77
  6. Step 6: Final answer
    x = 16,366.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.